Define the term "ground bearing pressure" in rigging.

Ground bearing pressure refers to the pressure exerted by a load on the ground, which is significantly influenced by both the weight and size of that load, as well as how the load is distributed across the lifting area. In rigging, understanding ground bearing pressure is crucial for determining the suitability of the ground beneath the load, ensuring that it can safely support the weight without leading to ground failure or sinking.

This term incorporates the fundamental principles of load distribution; for instance, a larger area over which a load is spread results in a lower pressure per unit area (often referred to as psi or pascals), while a smaller area would increase that pressure. Properly calculating this pressure helps riggers assess safe operational limits and select appropriate equipment to prevent accidents.

Ground bearing pressure does not relate to the overall weight of rigging equipment itself, the force exerted by riggers, or any pressures created by environmental factors like wind. Focusing on the interaction between the load and the ground is essential for safe rigging practices.